<template>
  <div>
    <el-tree
      :data="menus"
      :props="defaultProps"
      @node-click="handleNodeClick"
      node-key="catId"
      :expand-on-click-node="false"
      :default-expanded-keys="expandedKey"
    >
      <span class="custom-tree-node" slot-scope="{ node, data }">
        <span>{{ node.label }}</span>
        <span>
          <el-button
            type="text"
            size="mini"
            @click="() => append(data)"
            v-if="node.level <= 2"
          >
            Append
          </el-button>
          <el-button type="text" size="mini" @click="() => edit(data)">
            Edit
          </el-button>
          <el-button
            type="text"
            size="mini"
            @click="() => remove(node, data)"
            v-if="node.childNodes.length == 0"
          >
            Delete
          </el-button>
        </span>
      </span>
    </el-tree>
    <el-dialog
      :title="title"
      :visible.sync="dialogVisible"
      width="30%"
      :close-on-click-modal="false"
    >
      <el-form :model="category">
        <el-form-item label="分类名称">
          <el-input v-model="category.name" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="图标">
          <el-input v-model="category.icon" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="计量单位">
          <el-input
            v-model="category.productUnit"
            autocomplete="off"
          ></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="submitData">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
//这里可以导入其他文件（比如：组件，工具js，第三方插件js，json文件，图片文件等等）
//例如：import 《组件名称》 from '《组件路径》'

export default {
  //import引入的组件需要注入到对象中才能使用
  components: {},
  props: {},
  data() {
    //这里存放数据
    return {
      dialogVisible: false,
      expandedKey: [],
      dialogType: "", //edit,add
      menus: [],
      title: "",
      dialogType: "", //edit,add
      dialogVisible: false,
      title: "",
      expandedKey: [],
      category: {
        name: "",
        parentCid: 0,
        catLevel: 0,
        showStatus: 1,
        sort: 0,
        icon: "",
        productUnit: "",
        catId: null,
      },
      defaultProps: {
        children: "children",
        label: "name",
      },
    };
  },
  //计算属性 类似于data概念
  computed: {},
  //监控data中的数据变化
  watch: {},
  //方法集合
  methods: {
    handleNodeClick(data) {
      console.log(data);
    },
    //获取列表
    getMenus() {
      this.$http({
        url: this.$http.adornUrl("/product/category/list/tree"),
        method: "get",
        params: this.$http.adornData({}),
      })
        .then(({ data }) => {
          console.log(data);
          if (data && data.code === 0) {
            this.menus = data.data;
          } else {
          }
        }) //fail
        .catch(() => {});
    },
    append(data) {
      this.dialogType = "add";
      this.title = "添加分类";
      this.category.parentCid = data.catId;
      this.category.catLevel = data.catLevel * 1 + 1;
      this.category.catId = null;
      this.category.name = null;
      this.category.icon = "";
      this.category.productUnit = "";
      this.category.sort = 0;
      this.category.showStatus = 1;
      this.dialogVisible = true;
    },
    edit(data) {
      console.log("要修改的数据", data);
      this.dialogType = "edit";
      this.title = "修改分类";
      // 发送请求获取节点最新的数据
      this.$http({
        url: this.$http.adornUrl(`/product/category/info/${data.catId}`),
        method: "get",
      }).then(({ data }) => {
        // 请求成功
        console.log("要回显得数据", data);
        this.category.name = data.data.name;
        this.category.catId = data.data.catId;
        this.category.icon = data.data.icon;
        this.category.productUnit = data.data.productUnit;
        this.category.parentCid = data.data.parentCid;
        this.dialogVisible = true;
      });
    },
    submitData() {
      if (this.dialogType == "add") {
        this.addCategory();
      }
      if (this.dialogType == "edit") {
        this.editCategory();
      }
    },
    // 添加三级分类
    addCategory() {
      console.log("提交的三级分类数据", this.category);
      this.$http({
        url: this.$http.adornUrl("/product/category/save"),
        method: "post",
        data: this.$http.adornData(this.category, false),
      })
        .then(({ data }) => {
          this.$message({
            type: "success",
            message: "菜单保存成功!",
          });
          this.dialogVisible = false;
          // 刷新出新的菜单
          this.getMenus();
          this.expandedKey = [this.category.parentCid];
        })
        .catch(() => {});
    },
    // 修改三级分类数据
    editCategory() {
      var { catId, name, icon, productUnit } = this.category;
      this.$http({
        url: this.$http.adornUrl("/product/category/update"),
        method: "post",
        data: this.$http.adornData({ catId, name, icon, productUnit }, false),
      })
        .then(({ data }) => {
          this.$message({
            type: "success",
            message: "菜单修改成功!",
          });
          // 关闭对话框
          this.dialogVisible = false;
          // 刷新出新的菜单
          this.getMenus();
          // 设置需要默认展开的菜单
          this.expandedKey = [this.category.parentCid];
        })
        .catch(() => {});
    },
    remove(node, data) {
      console.log("node---", node);
      var ids = [data.catId];
      data.catId;
      this.$confirm(`是否删除【${data.name}】当前菜单?`, "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      })
        .then(() => {
          this.$http({
            url: this.$http.adornUrl("/product/category/delete"),
            method: "post",
            data: this.$http.adornData(ids, false),
          })
            .then(({ data }) => {
              if (data && data.code === 0) {
                this.$message({
                  message: "菜单删除成功!",
                  type: "success",
                });
                this.getMenus();
                //设置需要默认展开的菜单
                this.expandedKey = [node.parent.data.catId];
                console.log("expandedKey-->", this.expandedKey);
              } else {
              }
            }) //fail
            .catch(() => {});
        })
        .catch(() => {});
    },
  },
  //声明周期 - 创建完成（可以访问当前this实例）
  created() {
    this.getMenus();
  },
};
</script>
<style scoped>
</style>